Distribution of products
Rubber would not flourish in England, nor the olive in the Amazon Basin. For each important plants product there are certain conditions under which it thrives best. In this chapter the distribution of, the chief product ,both food and raw materials will be outlined. Production figures quoted in the diagrams are average values for the range of years mentioned.
Wheat
Wheat is the most important one f all the cereals, and has been cultivated for several thousand years. Wheat grains have been found in the Stone Age Lake dwelling of Switzerland scientists believe they have discovered in Palestine the wild cereal from which the cultivated varieties of wheat have been evolved
